The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2009
Filed:
Nov. 06, 2006
Ojars Maldavs, Lincoln, NE (US);
Ojars Maldavs, Lincoln, NE (US);
Parker-Hannifin Corporation, Cleveland, OH (US);
Abstract
A method of fluidly connecting coaxially aligned first and second couplings (), wherein the both couplings () have an inner high pressure passage () and a coaxial outer lower pressure passage (). Initially the first coupling inner high pressure passage () is fluidly connected with the first outer lower pressure passage () while isolating the second coupling inner high pressure passage () and the coaxial outer lower pressure passage (). Then the first coupling inner high pressure passage () and one of the second coupling inner and outer passages () is fluidly connected with the first coupling coaxial outer lower pressure passage () while isolating the other of the second coupling inner and outer passages (). Finally the first coupling inner high pressure passage () is fluidly connected with the second coupling inner high pressure passage () and the first coupling coaxial outer lower pressure passage () is fluidly connected with the second coupling coaxial outer lower pressure passage ().